阅读表达Haveyoueverthoughtaboutonequestion:whydoweneedtolearnmath?Itisaninterestingquestion.Kidsaroundtheworldhavebeenaskingitforyears.ForUSstudentstheymay

　　阅读表达

　　Haveyoueverthoughtaboutonequestion:whydoweneedtolearnmath?

　　Itisaninterestingquestion.Kidsaroundtheworldhavebeenaskingitforyears.ForUSstudentstheymaygettheanswerfromanewexhibitioncalled“MathAlive!”47activitiesaredesignedtoteachkidshowmathisusedineverydaylife.Forexampleatoneexhibitionstation

　　（1）visitorscantestthataperson’sarmspan（臂展）equalstheirheight.Atanotherstationvisitorscancontroltherobotwiththehelpofmathskills.

　　（2）Theexhibitionwillvisit15USandinternationalcitiesinthenextfiveyears.Organizerssaytheywantmorekidstolearnwhymathisimportantindailylife.Thinkofsimplethings，likeclocks.（3）Theytelltimebutonlyifyouknowhowtoreadthem.Thatmeansusingmath.Howmuchlongeruntilschoolends?Howlongdidyousleeplastnight?That’sallmathtoo.

　　（4）Whenyougo________youalsodolotsofmath.Howmuchchangewouldyougetifyoupaidfora25.99-yuansweaterwithtwotwenties?Howwouldyoucalculatea30%discount（折扣）?Evenwhenyou’renotdoingmathit’sallaroundyou.ThecomputeryouusetosurftheInternetisamachinetodobinary（二进制）mathveryfast.

　　Soenjoymathnotforexamsbutforthewonderfulworldithelpstobuild.

　　1．将（1）句译成中文。

　　2．将（2）句中的visit换成哪几个词能保持原句意思不变。

　　3．Whatdose“they”refertoinsentence（3）？

　　4．根据上下文在句（4）的空白处填入一个适当的词。

　　5．找出本段文章的主题句，写在答题卡上。